www/chromium builds OK on FB 8.2 but not on 7.4

[Henk van Oers]

I have updated all my ports today on 2 machines.
A new workstation running FreeBSD 8.2 had no problem.
An older one running FreeBSD 7.4 has this problem:

   CXX(target)
out/Release/obj.target/base/base/files/file_path_watcher_freebsd.o
base/files/file_path_watcher_freebsd.cc: In static member function 'static
int base::files::<unnamed>::FilePathWatcherImpl::EventsForPath(FilePath,
std::vector<kevent, std::allocator<kevent> >*)':
base/files/file_path_watcher_freebsd.cc:159: error: 'EV_RECEIPT' was not
declared in this scope
gmake: ***
[out/Release/obj.target/base/base/files/file_path_watcher_freebsd.o] Error 
1
*** Error code 1

Stop in /usr/ports/www/chromium.
*** Error code 1

Stop in /usr/ports/www/chromium.

===>>> make failed for www/chromium

What can I do?

I did:
- portmaster --check-depends
- pkgdb -L
- pkg_info -ga
- libchk

All OK.